International records / US diplomatic cables (WikiLeaks)
SITREP 13: 5 AMCITS REMAIN HOSTAGES; GOVERNMENT OFFICIALS NEGOTIATING RELEASE
CONFIDENTIAL cable from Lagos, Nigeria to São Paulo, Brazil | Central Intelligence Agency | Zagreb, Croatia | Defense Intelligence Agency | Department of Commerce | Department of Energy | Department of Homeland Security | Department of Transportation | Department of the Treasury | Economic Community of West African States (ECOWAS) | Rome, Italy | Joint Analysis Center Molesworth | Ciudad Juárez, Mexico | Abuja, Nigeria | Oslo, Norway | Warsaw, Poland | Secretary of Defense | Secretary of State | Istanbul, Turkey